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Mars has a sufficient mass and a low enough temperature that water molecules could exist in its atmosphere as vapor. One reason Mars’s atmosphere does not contain a significant amount of water vapor is that

The brown areas in the image above of Europa’s surface are most likely caused by mineral-rich water venting from the core of the moon.

The four stages of planetary development are shown above. Which is the first one?

We can be sure the particles in the rings of Neptune are very small because

The four stages of planetary development are shown above. Which is the last one?

On its icy surface, Uranus’s satellite Ariel has smooth valleys with few craters. Other areas are rough with many craters. Based on this, it can be concluded that

Briefly (but completely!) summarize how the greenhouse effect functions in Earth’s atmosphere.

The graph below plots the escape velocity of each planet along the vertical axis and its surface temperature along the horizontal. The lines plotted in the figure are the average speeds of gas particles as a function of temperature for various gases. Which of the planets or satellite plotted in this diagram has the greatest escape velocity? ​ ​

Tidal heating may cause the geological activity you see in the above image of the surface of Europa.

SUSTANTIVOS QUE REFIEREN A PERSONAS – MASCULINAS y FEMENINAS. Para cada persona, ponga el artículo y la forma que corresponden al otro género.  For each person listed, write the opposite gender form of the same word: el pasajero /  la pasajera     masculino femenino   masculino femenino el chico             [lachica]   [elhombre] la mujer [elconductor] la conductora   el joven              [lajoven] el estudiante     [laestudiante]   [elprofesor] la profesora